Statics Definition and 906 Threads

Homework Statement Homework Equations***i posted the questions and my free body diagrams below The Attempt at a Solution Hi. I'm trying to analyze this structure particularly at points C and B. when drawing the free body diagram, i notice there would be pin forces on C as well as B. Also...

Homework Statement Homework EquationsThe Attempt at a Solution I am getting 5/2 m as the answer. (not a choice) FR = -F1 -3F1 = -4F1 Mo = -F1(1) - 3F1(3) = -10F1 Mo = FRx x = -10/-4 = 5/2

Homework Statement Homework Equations The Attempt at a Solution I've spent so long trying to solve this system of equations with my calculator that can do this for me. But, somehow , i still don't get it.The equations i got are: 1st diagram Fc - Nb =0 Nc -0.3Nb -300=0...

Homework Statement Homework EquationsThe Attempt at a Solution why are my reactions at A considered wrong? I know that AC and DC are two force-members

Homework Statement Homework Equations Trying to find the reaction forces at E. But, I am kinda confused about drawing the free body diagram for each member. I know that member AD and CB are two force members. What is wrong with my free body diagram then? The Attempt at a Solution i...

Homework Statement "A beam of mass M = 280kg and length L = 2.2m is attached to a wall with a hinge (at a 90 degree angle to the wall, sticking out horizontally), and is supported at the other end by a wire making an angle of 30 degrees with the horizontal beam. What is the force acting on...

Dear colleagues: My name is Ignacio Pérez, a mining engineering student from Spain. I am trying to analyze the stability of a slab with rounded edges against a toppling failure. The slab can be considered rectangular-prism shaped (I provide a rectangular section in the enclosed picture) but the...

Something that has always been off for me is the canonical pedagogical treatment of analysis of trusses in the course typically called "Engineering Mechanics: Statics". Certainly, every cantilever bridge I see has completely attached joints, although lately I have seen some airy, open...

Homework Statement Homework EquationsThe Attempt at a Solution [/B] the force resultant = (100i +620j +800k) = 379 N moment result is (100i-620j+800k) = 1017 which is not correct! I calculated the moment of all forces about point O using cross product so... (-3i + 2j) x (-200j) + (-3i +2j) x...

Homework Statement Part C ) help Homework Equations So far.. Moment resultant = 1800i +3200k , magnitude = 3070 N*m Force resultant = 500i +300j + 800k , magnitude = 990 N The Attempt at a Solution For the location, I'm not getting x = 1.16, y =2.06. Instead , I am getting Mx = Fr*y --> y...

<< Mentor Note -- Thread moved from the technical forums, so no Homework Template is shown >> Okay, so i am having severe problems with figuring out what i did wrong... I am given : F1 = 250 and F2 = 90 The correct Force result is = 245 i +228 j with magnitude of 335 . The moment given is...

Homework Statement A subdivision lot is 200 ft long by 80 ft wide. A surveying crew made an error of 0.10 degrees when setting the iron pin in the corner of the lot shown. By what distance is the correct pin off of the true corner? Homework Equations I think I'm doing this one right...

Homework Statement A building is 400 ft tall and has suffered damage from a recent earthquake. If a surveyor is stationed 150 ft away, sets a zero angle on the bottom corner of the building, and turns the angle shown to the top of the building; what is the angle at which the building is leaning...

Hi all, I have a problem with a 3 wheel trailer and sizing the wheels. Using statics, how would I solve this 3D problem by breaking it down? The trailer is sitting on rectangular section and a plate on top carries an even load of 3500kg (roughly 35kN) If I take a cross section A-A and try and...

Homework Statement https://imgur.com/a/AGJaN It's a project so not a textbook question. The Attempt at a Solution Given in imgur picture. [/B] I'm looking to solve for C. The problem is actually a trailer with 3 axles but simplifying here as 3 fixed points where the wheels would be. The...

Forgive my current brain fart, but just posting here for some confirmation of my thoughts. I have a cart with a similar setup to a rear wheel wheelbarrow. Assuming static conditions, I am trying to determine the vertical reaction force (FA) from the ground when applying a horizontal force to...

Homework Statement All data are in the image uploaded Homework Equations I don't know how to deal with two confounded loads The Attempt at a Solution I really need fast replies thnak for your attempt

Homework Statement Homework Equations deformation=(force*length)/(elastic moduli*area) The Attempt at a Solution and since most of the variable are constants it seemed like a simple plug in problem, however it seems that my use of the forces is incorrect. unfortunately we had no examples...

Hello, I am working on a project where I am trying to find the weight distribution on a 4 wheeled vehicle that is traveling diagonally up an incline. You can effectively think of the vehicle as having a pitch and a yaw angle in the body frame. Using an arbitrary location of the total center of...

What does it mean where it says it provides couples on x-axis and z axis? Anyways what am I doing wrong? my procedure is finding tension in cables by summing moments about point A. then with the tensions, finding reactions at A. However when i sum the moments about A I get 3 equations 2...

A uniform beam of length L and mass m is inclined at an angle θ to the horizontal. Its upper end is connected to a wall by a rope, and its lower end rests on a rough, horizontal surface. The coefficient of static friction between the beam and surface is μs. Assume that the angle θ is such that...

I'm supposed to express the reultant force R of M, F1 and F2 in terms of F1, F2, r, s and α. But I need to know how to draw R first. How can one do this? Does the couple create a force uppwards from O? Can I move F_1 and F_2 also to the origin and combine the forces? Here is the image:

Homework Statement Pin A and C are the same, however in the solution manual it shows that C does not have a y component. Why is that? Homework EquationsThe Attempt at a Solution

Hello, i"m having a little trouble recognizing the reaction forces in 3d. To begin what does it mean when the question states "assume there is no axial thrust on hinge B?" on the following question. don't know how to upload picture here but there is a sheet of plywood on the ground and the there...

could someone please explain to me why there is no relative force at point a where the rod ab is attached to a thanks

Homework Statement Problem image: https://prnt.sc/gvhjso In this case I have to find the reaction forces at the point E (the Fx, Fy, and the Moment at point E) by using the given data. The 20kN forces at the load AC are concentrated, and are 1.8m far from each other. The tension of the cable is...

First of all, I will like to say that I'm teaching myself physics because I've never learned it at school. So, please excuse my ignorance and bear with me. This is not really a homework problem but rather a problem I thought on my own given a situation in real life. 1. Homework Statement...

In the following diagram, a frictionless disc is supported by a massless string. This problem was given by the author of a book, and a solution was given to some questions that were asked about this diagram. One thing the author said in one of the solutions, was that the tension in the string...

Homework Statement The angle at the bottom is 25 degrees Homework Equations Springs Parallel; keq = k1 +k2 Sum Forces = f1 + f2 x = f1/k1 = f2/k2 Springs Series; 1/keq = 1/k1 + 1/k2 Sum x = x1 +x2 F = k1x1 =k2x2The Attempt at a Solution Basically I'm having trouble finding the spring...

Homework Statement A uniform U-tube is partially filled with water (ρH20 = 1000 kg/m3). Oil, of density 750 kg/m3, is poured into the right arm until the water level in the left arm rises 30 mm. The length of the oil column is then: (Answer: 40mm) Homework Equations P = pgh Pressure = density...

Homework Statement All over the place here so bare with me, I'll get the hang of it eventually. -----For these types of problems.. can you start at either the top of the tank or from point a? -----Given specific Gravity, you need gamma of the unknown fluid so you multiply it by the density...

Homework Statement Hi, I'm having trouble with my first mechanics assignment and I'd appreciate some help. So, an object is being pulled using two ropes (Fa and Fb) with a resultant force of 970 N along the x axis. The angle from Fa to the axis is 20 degrees, angle from fb to the axis is 51...

Homework Statement Hi, I'm having trouble with my first mechanics assignment and I'd appreciate some help. So, an object is being pulled using two ropes (Fa and Fb) with a resultant force of 970 N along the x axis. Angle from Fa to the axis is 20 degrees, angle from fb to the axis is 51...

Homework Statement Resolve F2 into components along the u and v axes and determine the magnitudes of these components. Note that the magnitudes are positive numbers. Homework Equations Basic Trigonometrics The Attempt at a Solution I correctly calculated 150cos(150)N or 130N as the...

Homework Statement I will post a photo of the question in the thread once I've created it. I have found the magnitude and angle of the resultant force, but I am unsure of how to proceed. I find moments and couples confusing. Homework Equations $$\vec M = \vec r \times \vec F$$ The Attempt at...

I am attempting to learn more about the field of statics, engineering concepts related to stability under tensile and compressive stress, and related topics. I realize this a broad area of physics but educating myself piece by piece on wikipedia is tedious and disjointed, and Khan academy...

Homework Statement I'm trying to solve for this problem below.How would you be able to get the force in member ID and GC? Find the reaction forces in member AFGH Homework Equations ∑M = 0 ∑[F][/y] = 0 ∑[F][/x] = 0[/B] The Attempt at a Solution I dismembered all of its parts but no matter...

Homework Statement In two dimensions, the moment of a force can be calculated using the scalar method, MO=Fd, where F is the magnitude of the force and d is the perpendicular distance from the line of force to the point where the moment is being considered. Using the scalar method, calculate...

Homework Statement The board shown below is being held in equilibrium in the vertical plane by three smooth rods at A, B, and C Determine the magnitudes of forces at A, B, and C in terms of the weight of the body, W. Homework Equations Moment = f*r Here's a diagram The Attempt at a...

Homework Statement They ask for the smallest force P to apply if neither block is to slip. Coeff. of friction given as 0.25. The 20KG block is 196N; the 10KG block is 98.1N [/B]Homework EquationsThe Attempt at a Solution [/B] If we start at the 10KG block: Sum of forces x: N + cos26.6P –...

Homework Statement On an incline with slope angle α there lies a cylinder with mass M, its axis being horizontal. A small block with mass m is placed inside it. The coefficient of friction between the block and the cylinder is μ; the incline is nonslippery. What is the maximum slope angle α for...

Hey guys. I'm wondering if this is too heavy of a course load. I am studying construction management, but I'd like to minor in mathematics. I really enjoy math and science, and do well in all my classes. I want to finish the calculus series, but after this quarter I will not have the time. To...

Homework Statement I uploaded the image of the system to have a visual example. : ) A point mass ## m ## connected to a spring is bounded to move on a circular guide with radius ## R ## without friction. The guide is fixed to a vertical plane and the other extremity of the spring is attached at...

Homework Statement Homework Equations Sum of forces and moments The Attempt at a Solution Not getting the right answer. Dont know where I went wrong.

Homework Statement A bridge, constructed of 11 beams of equal length L and negligible mass, supports an object of mass M as shown in the picture. Assuming that the bridge segments are free to pivot at each intersection point, what is the tension T in the horizontal segment directly above the...

Homework Statement A thin walled spherical shell with a mass of 0.605 kg and a radius of 0.0402 is released, from rest, at the top of an incline. The spherical shell rolls down the incline without slipping. The spherical shell takes 7.49 s to get to the bottom of the incline. A solid sphere...

What's happening Form, It's been a while since I've done a FBD, but I wanted to get someone's input here and tell me if my math/logic is correct. I want to install a cantilever steel beam with a 20 lb mass at the end of it. I'm using carbon steel ASTM A108 (cheapest steel on McMaster-carr). I...

Homework Statement Determine all member forces and state if they are in tension or compression, in particular I am looking for member AE and AB[/B] Homework EquationsThe Attempt at a Solution Ok so we are supposed to redo the problems from our exam, only I can't figure out how to find the...

Homework Statement We have a 200-LB door hanging from 2 rollers, A & B, which are 5 feet apart. Coeffs of friction for A and B are .15 and .25, respectively. A force P is applied to the door. How big must it be to move the door to the left?[/B]Homework EquationsThe Attempt at a Solution I...

The last chapter of most introductory textbooks on STATICS introduces VIRTUAL WORK. It is rarely taught (I studied the syllabi of colleagues). I understand the Principle of Virtual Work, having researched and studied the Calculus of Variations, Hamilton's Principle, the Lagrangian and related...